K69 Transfer Case Control Module: Scan Tool Information
Scan Tool Data Parameters
| Parameter | Expected Value | Expected Value | Description |
|---|---|---|---|
| Operating Conditions: Ignition ON, engine OFF, Park or Neutral, and transfer case in 2WD, unless otherwise noted. | |||
| Engine Speed | RPM | Varies | This parameter displays engine RPM. |
| Warm-Ups Since Diagnostic Trouble Code Cleared | Counts | Varies | This parameter displays the number of warm-ups since DTC cleared. |
| Control Module Voltage Signal | 0.0 to 25.5 V | Battery Voltage | This parameter displays the voltage measured by the transfer case control module at the battery positive voltage circuit. |
| Ignition Cycles without Completed Test Since First Malfunction | Counts | Varies | This parameter displays the number of ignition cycles without a pass or a failure reported. |
| Engine Torque in Steady State | N.m | Varies | This parameter displays the engine actual steady state torque as received via CAN. |
| Steering Wheel Angle | Steering wheel in straight position | -5 to +5° | The scan tool displays °. This is the current position of the steering angle sensor. |
| Steering wheel turned left until stop | 450 - 550° | ||
| Steering wheel turned right until stop | -550 to -450° | ||
| 4WD Automatic Range Indicator Command | ON or OFF | OFF | This parameter displays ON when the transfer case control module commands the Auto 4WD indicator ON. |
| Electric Park Brake Not Available | Not Available, Available, Failed | Available | This parameter displays the EPB status based on CAN message. |
| Odometer | M or Km | Varies | This parameter displays the vehicle mileage. |
| Propulsion System Status | Not Active, Active | Active | This parameter displays the propulsion system state as received via CAN. |
| Service 4WD Indicator Command | ON or OFF | OFF | This parameter displays ON anytime a DTC sets. |
| All Wheel Drive | Normal, Temporarily Inhibited, Temporarily Limited, Failed | Normal | This parameter displays the status of the transfer case system. |
| AWD Off Indicator Request | Requested, Not Requested | Not Requested | This parameter displays ON anytime the AWD OFF DIC message displays. |
| AWD Input-Output Circuit Status | OK, Failed | OK | This parameter displays the status of the AWD system. |
| Transfer Case Clutch Torque | N.m | 0.0 | This parameter displays the estimated torque being held by the transfer case clutch. |
| Transfer Case Thermal Capacity Used | % | Varies | This parameter displays the estimated clutch capacity used. |
| Transfer Case Drive Mode | Two Wheel Drive High Active, Four Wheel Drive High Lock Active, Four Wheel Drive Low Active, All Wheel Drive Connected Active, Four Wheel Drive High Auto Active, Four Wheel Drive Low Active, All Wheel Drive Connected Active, Two Wheel Drive Low Active, Position Unknown, Transfer Case Neutral Active | Varies | This parameter displays the current mode of the 4WD system based on the secondary axle. |
| Calculated Transfer Case Clutch Temperature | °C/°F | Varies | This parameter displays the estimated clutch temperature. |
| Transfer Case Fluid Temperature | °C/°F | Varies | This parameter displays the estimated transfer case fluid temperature. |
| Transfer Case Clutch Engagement | % | Varies | This parameter displays the transfer case clutch torque level in percentage of clutch capacity. |
| Requested Transfer Case Clutch Torque | N.m | Varies | This parameter displays the commanded torque to be held by the transfer case clutch. |
| Transfer Case Clutch Overtemperature Counter | Counts | Varies | This parameter displays the count of clutch over temperature events. |
| Clutch Overtemperature Counter Reset Request Allowed | No, Yes | Yes | This parameter displays status of over temperature counter reset. |
| Transfer Case Clutch Learn Status | Not Learned, Passed, Failed, Aborted, In Progress, Reserved | Passed | This parameter displays the status of the last transfer case clutch learn. |
| Vehicle Stability Control Request | % | Varies | Vehicle stability enhancement system coupling request value |
| AWD Front and Rear Wheel Speed Differential | RPM | Varies | This parameter displays the speed difference between the front and rear wheels. |
| Lateral Acceleration | G's | Varies | This parameter displays the vehicles lateral acceleration. |
| Yaw Rate | degree/sec | Varies | This parameter displays the vehicles yaw. |
| Secondary Axle Locking Torque Coupling Request | Not Requested, Maximum Torque, Minimum Torque, Actual Torque | Varies | This parameter displays the secondary axle locking torque requested by CAN message. |
| Range Actuator Lock Command | Disengaged or Engaged | Disengaged | This parameter displays the commanded status of the range actuator lock. The lock will be engaged in Auto 4WD, 4WD High, or 4WD Low, and Disengaged in 2WD High and Neutral. |
| Range Actuator Motor Current - Shunt Circuit 1 | Amps | Varies | This parameter displays the measured current of the Transfer Case Range Actuator on Shunt 1. |
| Range Actuator Motor Current - Shunt Circuit 2 | Amps | Varies | This parameter displays the measured current of the Transfer Case Range Actuator on Shunt 2. |
| Message Authentication Key Configuration State | Not Needed, Needed | Varies | This parameter is an indication to service tool that key provisioning is necessary. |
| Power Mode | OFF, Accessory, Run or Crank Request | Run | This parameter displays the status of the ignition switch. |
| Left Front Wheel Speed | Varies | 0 km/h (0 MPH) | The scan tool displays km/h (MPH) depending on the current speed of the left front wheel speed sensor. |
| Left Rear Wheel Speed | Varies | 0 km/h (0 MPH) | The scan tool displays km/h (MPH) depending on the current speed of the left rear wheel speed sensor. |
| Right Front Wheel Speed | Varies | 0 km/h (0 MPH) | The scan tool displays km/h (MPH) depending on the current speed of the right front wheel speed sensor. |
| Right Rear Wheel Speed | Varies | 0 km/h (0 MPH) | The scan tool displays km/h (MPH) depending on the current speed of the right rear wheel speed sensor. |
| Transfer Case Range Position Sensor and Transfer Case Incremental Position Sensor Variance Allowed | ° | Varies | This parameter displays the allowed variation between transfer case range position sensor and the range actuator position sensor. |
| Transfer Case Range Position Sensor and Transfer Case Incremental Position Sensor Variance | ° | Varies | This parameter displays the actual variation between transfer case range position sensor and the range actuator position sensor. |
| Front Axle Engagement Actuator Command | Engaged or Disengaged | Disengaged | This parameter displays either Engaged or Disengaged. Engaged when the body control module is commanding Auto 4WD, 4WD, or 4WD Low ranges, and Disengaged when the body control module is commanding Neutral, or 2WD ranges. |
| Front Axle Engagement Actuator Control Circuit High Voltage Test Status | Not Run, OK or Malfunction | OK | This parameter monitors the status of the front axle engagement actuator control circuit. A short to battery on the front axle engagement actuator control circuit will cause this parameter to display Malfunction. |
| Front Axle Engagement Actuator Control Circuit Low Voltage Test Status | Not Run, OK or Malfunction | OK | This parameter monitors the status of the front axle engagement actuator control circuit. A short to ground on the front axle engagement actuator control circuit will cause this parameter to display Malfunction. |
| Front Axle Engagement Actuator Control Circuit Open Test Status | Not Run, OK or Malfunction | OK | This parameter monitors the status of the front axle engagement actuator control circuit. An open/high resistance condition on the front axle engagement actuator control circuit will cause this parameter to display Malfunction. |
| Front Axle Actuator Status | Engaged or Disengaged | Disengaged | This parameter displays the actual status of the front axle. The parameter will display Engaged when the system is in Auto 4WD, 4WD, or 4WD Low modes, and Disengaged when the system is in Neutral, or 2WD High or Neutral mode. |
| Range Actuator Control Circuit High Voltage Test Status | Not Run, OK or Malfunction | OK | This parameter monitors the status of the range actuator control circuit. The range actuator control circuit is made up of the range actuator control circuit A and the range actuator control circuit B. A short to battery on the range actuator control circuit A or the range actuator control circuit B will cause this parameter to display Malfunction. |
| Range Actuator Control Circuit Low Voltage Test Status | Not Run, OK or Malfunction | OK | This parameter monitors the status of the range actuator control circuit. The range actuator control circuit is made up of the range actuator control circuit A and the range actuator control circuit B. A short to ground on the range actuator control circuit A or the range actuator control circuit B will cause this parameter to display Malfunction. |
| Range Actuator Control Circuit Open Test Status | Not Run, OK or Malfunction | OK | This parameter monitors the status of the range actuator control circuit. The range actuator control circuit is made up of the range actuator control circuit A and the range actuator control circuit B. An open on the range actuator control circuit A or the range actuator control circuit B will cause this parameter to display Malfunction. |
| Range Actuator Control Circuit Shorted Test Status | Not Run, OK or Malfunction | OK | This parameter monitors the status of the range actuator control circuit. The range actuator control circuit is made up of the range actuator control circuit A and the range actuator control circuit B. A short to ground, short to battery or short together on the range actuator control circuit A and/or the range actuator control circuit B will cause this parameter to display Malfunction. |
| Range Actuator Current | -15.0 to +36.0 A | 0.0 A | This parameter displays the current drawn by the range actuator from the transfer case control module on either the range actuator control circuit A or the range actuator control circuit B. Typical values display 0.0 to 12.0 A. This parameter will display 0.0 A after shifting ranges. |
| Range Actuator Direction Command | Invalid, Stationary, Clockwise or Counter-clockwise | Stationary | This parameter displays what direction the transfer case control module is commanding the range actuator to turn. This parameter will display Stationary after a range change. |
| Transfer Case Range - Range Position Sensor | 2WD, 4WD High - 2WD 4WD High/Locked, 4WD High - Neutral, Neutral, Neutral - 4WD Low, or 4WD Low | 2WD | This parameter displays the actual position of the transfer case according to the range actuator position sensor. |
| Transfer Case Range - Incremental Position Sensor | 2WD, 4WD High - 2WD 4WD High/Locked, 4WD High - Neutral, Neutral, Neutral - 4WD Low, or 4WD Low | 2WD | This parameter displays the actual position of the transfer case according to the incremental position sensor. |
| Transfer Case Position - Range Position Sensor | - 125 to 120° | 6° | This parameter displays the position of the range actuator position sensor in degrees. Typical scan tool displays:
|
| Transfer Case Commanded Position | - 65 to 0° | 0° | This parameter displays the commanded position of the transfer case in degrees. Typical scan tool displays:
|
| Transfer Case Commanded Position | 2WD, 4WD High/Locked, 4WD Low, Neutral or None | 2WD | This parameter displays the current range commanded by the driver. |
| Transfer Case Range Selection Switch State | Invalid, Neutral, 2WD, 4WD/AWD Automatic, 4WD High/Locked, 4WD Low, 4WD Unlocked | 2WD | This parameter displays the current mode the transfer case is in, as indicated by the transfer case range position switch. |
| Range Actuator Lock Command Status | Disengage, Engage, Failed | Engage | This parameter displays the range actuator brake status. |
| Range Actuator Brake Control Circuit Current | Amps | Varies | This parameter displays the current for the transfer case range actuator brake. |
| Range Actuator Brake Control Circuit Low Side Voltage | Volts | Varies | This parameter displays the diagnostic voltage for the transfer case range actuator brake. |
| Range Actuator Brake Control Circuit High Side Voltage | Volts | Varies | This parameter displays the diagnostic voltage for the transfer case range actuator brake. |
| Range Actuator Lock Command Status | Unlocked, Locked | Locked | This parameter displays the command status of the range actuator brake. |
| Range Actuator Lock Control Circuit Low Voltage Test Status | Failed, Indeterminate, Passed | Passed | This parameter displays the status of the range actuator brake test. |
| Range Actuator Lock Control Circuit Open Test Status | Failed, Indeterminate, Passed | Passed | This parameter displays the status of the range actuator brake test. |
| Range Actuator Lock Control Circuit High Voltage Test Status | Failed, Indeterminate, Passed | Passed | This parameter displays the status of the range actuator brake test. |
| Transfer Case Clutch Learn Counter | Counts | Varies | This parameter displays the number of times the transfer case clutch learn has been completed. |
Scan Tool Output Controls
| Output Control | Description |
|---|---|
|
NOTE:
Refer to the scan tool manual for complete scan tool operating instructions.Transmission must be in transmission neutral for any of these output controls to operate. |
|
| Front Axle Engagement Actuator |
NOTE:
This function allows the technician to command the front axle to engage or disengage.Transmission must be in transmission Neutral for this output control to operate. |
| Range Actuator (if equipped) | This function is intended to activate the range actuator control circuits. The range actuator control circuits can be commanded OFF or ON, in either the clockwise or counter-clockwise direction, to ensure all portions of the control module driver are operational. This device control can be operated with the actuator connected to verify actuator operation, or disconnected for circuit testing. The activation of this control must ensure the range actuator lock is activated as well to ensure actuator movement when the range actuator is plugged in. If the device control is activated with the range actuator plugged in, the range actuator shall return to the nearest legal range position after return to normal control. |
| Range Actuator Lock |
NOTE:
This function allows the technician to command the range actuator lock to engage or disengage.You may need to perform an ignition OFF in order to recover. |
| Range Actuator Learn | This function allows the technician to command the transfer case control module to relearn the clutch status after the range actuator, control module, or transfer case has been replaced. |
| Transfer Case Clutch Engagement | This function is used to override the clutch capacity command of the all wheel drive clutch output. |
| Transfer Case Clutch Identifier | This device control is used to program the transfer case clutch identifier. |
| Transfer Case Range | This device control is used to override the transfer case range position. |
| Transfer Case Neutral Range Indicator | This function allows the technician to command the transfer case neutral range indicator, within the transfer case control switch, ON or OFF. |
| Transfer Case Clutch Learn Counter Reset Command | This function allows the technician to command a reset of the learn counter. |